9930 - Malfunctioning Touchscreen?

Hey all,

I have a VZW 9930 on .374 and I've noticed 2 things pertaining to irregular touchscreen responsiveness..

1. When the device is lying flat.
I don't know why (or if its supposed to be) the device seems temperamental when in said position.
2. While plugged into a wall charger.
Earlier today I was charging the device with an OEM wall charger and the device was going bonkers - hadn't noticed that before.

Is it software/hardware? Has anyone else experienced this? Is there a fix? Etc..

Thanks!

ive noticed the lying flat issue, on my 9900 and my 9810.

It is the angle of the touch and screen responsiveness.